David seeks to relocate from Gath, the Philistine capital, to a more isolated settlement. Living alongside the Philistines in the royal city had created a mutual sense of discomfort for both the local residents and David's men [ביאור שטיינזלץ]. To achieve this move, David presents King Achish with a carefully crafted set of diplomatic arguments. He begins by asking for the king's favor, essentially requesting a display of trust. Naturally, a monarch prefers to keep a potential rebel close at hand in the capital, directly under the watchful eye of the royal army, so David must convince Achish to trust him from afar [מלבי״ם]. By asking for a designated, separate space for his men and their families, David aims to minimize friction and protect his followers from potential conflicts with the local Philistines [מלבי״ם, רד״ק, אברבנאל].
David specifically requests to be placed in a country town. These were small [ביאור שטיינזלץ], open settlements lacking protective walls, doors, or bars [רלב״ג, מצודת דוד, אברבנאל]. The commentators agree that this is a highly calculated choice. By deliberately asking for an unfortified town, David reassures Achish, proving that he has no intention of building a stronghold to launch a rebellion.
To further justify his departure, David argues that it is inappropriate for him to remain in the royal city. He frames this as a desire to avoid becoming a heavy financial burden on the king [רש״י, רד״ק, אברבנאל], noting that the presence of his large camp could drive up local food prices [מצודת דוד]. Furthermore, there is an underlying sense of impropriety in having two men of royal stature residing together in the exact same city [אברבנאל].
However, beneath these polite and practical justifications lies a hidden objective. David's true purpose in requesting a separate city is to escape the constant, scrutinizing gaze of the Philistines. By living in a distant, open town, he and his men can freely launch military raids and gather spoils without the Philistines ever noticing their true activities [רד״ק, אברבנאל].